li{
  list-style:none;
}
form {
  width: 1140px;
  padding: 30px;
  border: 3px solid orange;
  border-radius: 10px;
  margin: 100px auto;
  display: flex;
  flex-direction: column;
  padding-top: 50px;
  position: relative;
  background-color: white;
  box-shadow: 0 0 5px 0 orange;
}

.empty{
  width: 1140px;
}
.empty>p{
  font-weight: 500;
  color:black;
  text-align: center;
  font-size: 30px;
}
.content > div {
  display: none!important;
}
.content > div.active {
  display: block!important;
}
.top{
  width: 1140px;
  height: 20px;
  display: flex;
  padding: 10px 0;
  border-bottom: 1px solid orange;
  position: relative;
  color:black;
}
.top>div{
  display: flex;
  flex:1;
  float:left;
  justify-content: center;
}
.center>li:nth-child(1){
  margin-top: 20px;
}
.center>li{
  width: 1140px;
  height: 30px;
  display: flex;
  color:black;
  padding-bottom: 20px;
}
.center>li>div{
  display: flex;
  overflow:hidden;
  flex:1;
  line-height: 30px;
  float:left;
  justify-content: center;
}
.destory>button{
  width: 60px;
  height: 30px;
  border-radius: 5px;
  padding: 0;
  border:0;
  font-size: 15px;
  cursor: pointer;
  background-color: orange;
  color:white;
}
